When type of nearby place is unknown, let description empty rather than just "?"

[nicolas-raoul]

Steps to reproduce:

1. Go to Nearby
2. Find a place which has no type (when you tap on it then tap on the bottom panel that appears, the last line says "?"
3. Upload a picture for it (you can cancel before the real upload)
4. Description is pre-filled with "?"

While it makes sense to prefill if the type is "school" or "hospital", when it is "?" the description should be left empty.

Screen-shots:

[brendajerop]

@nicolas-raoul I'd like to work on this

[nicolas-raoul]

@brendajerop It is yours! :-)

[brendajerop]

@nicolas-raoul I am not able to work on this issue as of now due to complications with my computer :(. So someone else can take it up.

[vanshikaarora]

@nicolas-raoul Shall I take this up?

[ujjwalagrawal17]

Sure @vanshikaarora feel free to work on it.

[vanshikaarora]

Thanks @ujjwalagrawal17 :)

[nicolas-raoul]

@brendajerop Thanks for letting us know! :-)

[vanshikaarora]

@nicolas-raoul @ujjwalagrawal17 I have made a Pull Request here #2586 Kindly review :)